1) demand valve
供需阀
2) demand valve
按需供气阀
3) Supply and demand
供需
1.
An analysis and forecast on the supply and demand of newsprint, coated paper and coated white board;
新闻纸、铜版纸及涂布白纸板的供需分析和预测
2.
Current situation and forecast of supply and demand in the global polystyrene market;
世界聚苯乙烯市场供需现状及预测
3.
A study on risk analysis between supply and demand of regional water resources;
区域水资源供需风险分析的应用研究
4) supply & demand
供需
1.
On the Disclosure of the Supply & Demand of Accounting Information in China s Security Market;
中国证券市场会计信息披露供需研究
2.
The article introduces supply & demand status of domestic and foreign styrene, forecasts market development situation of domestic and foreign styrene and analyzes future price changes of domestic and foreign styrene.
分析了国内外苯乙烯市场供需现状,预测了国内外苯乙烯的市场发展趋势及未来价格走势。
3.
Main factors that will affect supply & demand of China's synthetic fiber materials are the development of macro-economy,international oil price an.
今后影响我国合纤原料供需的因素主要是宏观经济发展、国际油价、出口环境等。
5) supply/demand
供需
1.
The overseas supply/demand status and developing trend of PET industrial yarn and PET tire cord fabric were analyzed.
通过分析国外涤纶工业丝及其帘子布的供需现状和发展特点,探讨了我国涤纶工业丝及其帘子布市场供需趋势,并对我国涤纶工业丝及其帘子布的发展提出建议。
2.
This paper analysis the status of benzene supply/demand and consumption structure home and a broad.
分析了2005年世界市场纯苯的供需情况、市场消费情况,同时分析了中国纯苯价格及进出口情况。
3.
The supply/demand and R&D of p-aramid fibers were briefly introduced.
简介对位芳纶的供需和研发概况,着重叙述PPTA型芳纶、共聚型芳纶、俄罗斯芳纶等重要对位芳纶产品以及PBO纤维、M5纤维等相关高性能纤维的生产技术和主要性能,探讨了开发生产高性能纤维的通用技术;分析了对位芳纶应用的现状和技术;预测对位芳纶生产技术和应用技术的发展趋势。
6) Demand and supply
供需
1.
The Study on The Demand and Supply of The Port and Its Welfare;
港口产业供需函数及福利效率分析
2.
Based on analysis of development of home & abroad iron and steel industry and according to demand and supply of iron ore in the world,some suggestions are made for facing the new situation properly.
介绍和分析了国内外钢铁生产的情况及世界各国 (地区 )铁矿石生产和供需的新态势 ,提出了应采取的措施。
3.
Based on an investigation into the present status of demand and supply of special steels in the country and in the light of China's development goal and the following needs in the 21st century, this paper has explored into the effects of China's joining into WTO on the demand and supply of special steels in domestic market.
在对国内特殊钢行业供需现状调查的基础上 ,根据我国进入 2 1世纪的发展目标及其客观要求 ,并结合国内外钢铁产业发展的趋势 ,探讨了中国加入 WTO后对国内特殊钢供需因素的影响及其预测问
补充资料：溢流阀、顺序阀、减压阀的比较
溢流阀 | 减压阀 | 顺序阀 | ||
控制油路的特点 | 通过调整弹簧的压力控制进油路的压力，保证进口压力恒定，p2＝0 | 通过调整弹簧的压力控制出油口的压力，保证出口压力p2稳定 | 直控式－通过调定调压弹簧的压力控制进油路压力；夜控式－由单独油路控制压力 | |
出油口情况 | 出油口与油箱相连 | 出油口与减压回路相连 | 出油口与工作回路相连 | |
泄漏形式 | 内泄式 | 外泄式 | 内泄式 | |
进油口状态及压力值 | 常态 | 常闭（原始状态） | 常开（原始状态） | 常闭（原始状态） |
工作状态 | 进出油口相通，进油口压力为调整压力 | 进油口压力低于出油口压力，出油口压力稳定在调定值上 | 进出油口相通，进油口压力允许继续升高 | |
联接方式 | 并联 | 串联 | 实现顺序动作式串联作卸荷阀用时并联 | |
功用 | 定压、溢流或安全作用限压、稳压、保压 | 减压、稳压 | 不控制系统的压力，只利用系统的压力变化控制油路的通断 | |
进油腔压力p1控制阀芯移动 | 出油腔压力p2控制阀芯移动 | 进油腔压力p1控制阀芯移动 | ||
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条